A. nucleus
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Answer:
none. 0. for work to be done the object has to have displacement, and even though you were exerting force, the box did not move and s work is o it could also be 50 but I'm sure it is 0
Explanation:
Answer:
0 J
Explanation:
Work is the dot product of force vector and distance vector
According to Newton's 1st law, an object subjected to no force, or net force 0, would maintain a constant speed. If the block is moving with a constant speed, then the net force (gravity, friction) must be 0. Therefore, the work that is done on the block to move at this constant speed must also be 0.
Answer:
Explanation:
Given
Object is thrown with a velocity of
Acceleration due to gravity is -g (i.e. acting downward)
Vertical distance traveled by object is given by
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
at maximum height final velocity is zero
time taken to reach maximum height
using
v=u+at
0=9-gt
The answer is D. time really does pass more slowly in a rest frame of reference relative to a frame of reference that is moving